GCD of 821, 513, 646, 977 Calculator

Given Input numbers are 821, 513, 646, 977

In the factoring method, we have to find the divisors of all numbers

Divisors of 821 :

The positive integer divisors of 821 that completely divides 821 are.

1, 821

Divisors of 513 :

The positive integer divisors of 513 that completely divides 513 are.

1, 3, 9, 19, 27, 57, 171, 513

Divisors of 646 :

The positive integer divisors of 646 that completely divides 646 are.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 977 :

The positive integer divisors of 977 that completely divides 977 are.

1, 977

GCD of numbers is the greatest common divisor

So, the GCD (821, 513, 646, 977) = 1.

Given numbers are 821, 513, 646, 977

The list of prime factors of all numbers are

Prime factors of 821 are 821

Prime factors of 513 are 3 x 3 x 3 x 19

Prime factors of 646 are 2 x 17 x 19

Prime factors of 977 are 977

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 821, 513, 646, 977

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(821, 513) = 421173

GCD(821, 513) = ( 821 x 513 ) / 421173

= 821 / 513

= 821

Step2:

LCM(1, 646) = 646

GCD(1, 646) = ( 1 x 646 ) / 646

= 1 / 646

= 1

Step3:

LCM(1, 977) = 977

GCD(1, 977) = ( 1 x 977 ) / 977

= 1 / 977

= 1

So, Greatest Common Divisor of 821, 513, 646, 977 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 755, 195, 214, 304
• GCD of 173, 735, 342, 205
• GCD of 900, 297, 515, 224
• GCD of 189, 117, 498, 467
• GCD of 561, 353, 831, 646

Given numbers are 821, 513, 646, 977
The greatest common divisor of numbers 821, 513, 646, 977 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 821, 513, 646, 977 is 1.

1. What is the GCD of 821, 513, 646, 977?

GCD of given numbers 821, 513, 646, 977 is 1

2. How to calculate the greatest common divisor of 821, 513, 646, 977?

We can find the highest common divisor of 821, 513, 646, 977 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 821, 513, 646, 977 i.e 1.

3. How can I use the GCD of 821, 513, 646, 977Calculator?

Out the numbers 821, 513, 646, 977 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.